Boulder, Colorado, United States of America: What to pack, what to wear, and when to go [2021]

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Traveling to Boulder, Colorado, United States of America? If you're planning to go to Boulder, we have some important information about when to go, what to wear, and what to pack.

Contents


When to go to Boulder, Colorado, United States of America

Based on the climate and weather in Boulder, the best time to go is August. See below for details.

Important esssentials for Boulder, Colorado, United States of America

Here are some general tips on what to wear in Boulder, as well as several items to remember to pack when traveling there.

What to wear/what to pack for Boulder, Colorado, United States of America by month

January

Traveling to Boulder in January, you will notice that it can be very chilly. Daytime temperatures are in the 40s F (single digits C).

What to wear/what to pack:

February

February in Boulder can be brisk. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C).

What to wear/what to pack:

March

Traveling to Boulder in March, you will notice that it is cold. Expect it to rain sometimes. Daytime temperatures are in the low 50s F (low 10s C).

What to wear/what to pack:

April

April in Boulder is crisp. Temperatures average in the low 60s F (mid 10s C) during the day. It rains once in a while.

What to wear/what to pack:

May

May in Boulder is balmy. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 60s F (low 20s C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

June

June for Boulder is a perfect temperature. Temperatures average in the high 70s F (mid 20s C) during the day.

What to wear/what to pack:

July

If you vacation in Boulder during July, you may find that it is hot.

Temperatures tend to hover around the 80s F (high 20s C) during the day, while at night they can dip into the high 50s F (mid 10s C).

What to wear/what to pack:

August

August is pretty consistently hot. Temperatures average in the low 80s F (high 20s C) during the day.

What to wear/what to pack:

September

Traveling to Boulder in September, you will notice that it is warm and dry with little rain. Daytime temperatures are in the high 70s F (mid 20s C).

What to wear/what to pack:

October

If you are traveling to Boulder in October, you will notice that it is chilly. Daytime temperatures are in the 60s F (high 10s C).

What to wear/what to pack:

November

November in Boulder can be brisk. The average overnight temperatures in the area are in the low 30s F (single digits below 0 C).

What to wear/what to pack:

December

If you are traveling to Boulder in December, you will notice that it is pretty cool. Daytime temperatures are in the 40s F (single digits C).

What to wear/what to pack:

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